The volume of the bigger sphere will be around 3000 inches³.
A sphere is a 3D geometrical object which has a radius and becomes a point that revolves around a fixed point called the center.
If you have a sphere of radius r then its surface area will be 4πr² and volume will be (4/3)πr³.
Volume of an sphere is directly proportion with radius cube
So,
V₂/V₁ = (R₂/R₁)³
Given,
R₁/R₂ = 2/5
V₁ = 192
V₂ = 192 × (5/2)³
V₂ = 3000 inches³.
Hence the volume of the bigger sphere will be 3000 inches³.
For more about a sphere
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